An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 6105-01-312-4218
NSN 5960-01-323-6432
NSN 5945-00-947-5782
NSN 6150-01-325-0156
NSN 5930-01-027-1082
NSN 6320-01-247-0898
NSN 5985-01-231-9759
NSN 6320-01-006-6138
NSN 5999-01-545-6834
NSN 5999-01-459-4230
NSN 5945-00-265-1762
NSN 5935-01-299-8575